UL 94 Supreme
Fire Testing System
Highlights
Test Device for Flammability of Plastics for Parts in Devices and Appliances
UL 94 is one of the most widely recognized flammability standards for plastics. It defines methods to classify materials based on how they burn in different orientations and under different conditions. NETZSCH offers dedicated UL94 flammability test instruments designed to perform the full range of UL 94 classifications under controlled and repeatable conditions:
- ASTM Standards: ASTM D635, D3801, D4804, D5048, D4986, ASTM D5025, ASTM D5207
- European Standards: EN 60695 Part 11-10, EN 60695 Part 11-20, EN 60695 Part 11- 3, EN 60695 Part 11-4, IEC EN 60707
- ISO Global Standards: ISO 1210, ISO 9772, ISO 9773, ISO 10093, ISO 10315
Well thought-out details along with the use of high-quality materials guarantee the UL 94 a long product life while reduing the need for cleaning and maintenance, increasing safety and greatly simplifying day-to-day work at the laboratory.
Method
- Sample holder for rod-shaped and flat samples
- Semi-automatic calibration
- Automated measurement process
- Operator guidance via high-resolution 10" touch screen with brilliant colors and catchy icons for menu functions
- Accessories for standard tests included (options see separate technical datasheet)
- Closed combustion chamber with exhaust fan, black interior walls and mirrors
- Material: stainless steel, bead blasted
- Large sliding window with fire-resistant glazing on the front door
- Adjustable burners with adjustable tilt angle (0°, 20°, 45°)
- Calibration aid for burner flame
- Semi-automatic operation: Electrically driven spindle system for positioning the samples and the burner for horizontal and vertical tests including frame and wire mesh
- Additional manual operation: Two openings with panels on the front for manual access allowing manual positioning and adjustment of the burner
- Sample holder for horizonal and vertical tests
- Processor-controlled timer
- Remote control with reset button for time measurement
- Metal dipstick
- Processor-controlled flowmeter, pressure regulator and pressure gauge
- Gauges for flame height and samples
- Base frame with rolls and drawer (option)
- Exhaust piping, aluminum link hose with draft diverter (option)
What is the difference between the NETZSCH UL 94 Supreme and UL 94 Classic flammability testing devices?
Both the NETZSCH UL 94 Supreme and UL 94 Classic test instruments are designed for the assessment of the flammability of plastic materials used in parts of devices and appliances.
They comply with the same international standards – including ASTM D635, D3801, D4804, D5025, EN 60695 (Parts 11-3, 11-4, 11-10, 11-20) and ISO 9772 / 9773 – ensuring identical test results and classifications according to UL 94.
The main difference lies in the degree of automation, handling, and operator comfort. The UL 94 Supreme offers semi-automatic operation and digital control for higher throughput and reproducibility, while the UL 94 Classic presents a manual, cost-efficient alternative with the same test precision and reliability — perfectly suited for laboratories that value simplicity and full control over every test step.
Summary of key differences
| Feature | UL 94 Supreme | UL 94 Classic |
|---|---|---|
| Operation | Semi-automatic with electric spindle system | Manual adjustment |
| Control | Touch display with UL 94 software | Manual front-panel controls |
| Calibration | Processor-controlled | Manual flame calibration |
| Chamber interior | Black insulated walls for enhanced visibility | Black walls for enhanced visibility |
| Positioning axes | Electric Y/Z axes I manual X | Manual X/Y/Z axes |
| Timer / Flow control | Processor-controlled | Manual stopwatch / mechanical gauges |
| Best suited for | High-throughput, automated laboratories | Educational, QC, or manual operation environments |
Of course, both systems deliver accurate, standard-compliant UL 94 flammability results.
Specifications
| Measurement method | Test device for assessing the flammability of plastics for parts in devices and appliances in accordance with ISO UL 94 5th an 6th Edition, DIN EN 60695 Part 11-10, DIN EN 60695 Part 11-20, DIN EN 60695 Part 11- 3, DIN EN 60695 Part 11-4, ISO 9772 and ISO 9773 |
|---|---|
| Sample holder | Sample holder for horizontal and verticals tests with sample support, thermocouple holder and wire grid |
| Burner |
|
Related Devices
Proven Excellence in Service
At NETZSCH Analyzing & Testing, we offer a comprehensive range of services globally to ensure the optimal performance and longevity of your thermoanalytical equipment. With a track record of proven excellence, our services are designed to maximize the effectiveness of your devices, extend their lifespan, and minimize downtime.
Unlock the full potential of your equipment with our tailored solutions, backed by years of industry expertise and innovation.
Downloads and Media
Application Literature
Our latest blog articles
- 21.04.2026
More Transparency in Combustion Gas Analysis: OMEGA 5 FT-IR Coupling on the NETZSCH TCC 918 Cone Calorimeter
- 23.10.2025
NEW: The NETZSCH UL 94 Classic – the Base Version for Reliable Flammability Testing
- 23.09.2025
How Material Thickness Influences Fire Testing – Key Insights by Means of Cone Calorimeter Analysis
- 19.08.2025
EN 13501 – Fire Classification in Europe and How NETZSCH Supports Compliance
- 05.03.2025
Fire Testing of Stabilized Polyacrylonitrile (PAN) Fibers with the NETZSCH LOI 901
- 12.08.2024
Fire Resistance Testing and Fire Safety Engineering
